↑ 1.01.11.21.31.41.5While enlisted ranks were mentioned onscreen, the costuming staff of canonStar Trek: TOS-era productions operated under the assumption that no insignia existed. The idea that different sleeve stripes could exist and that various facets of the uniform could signify enlisted status originates from fan fiction and fan reference sources, based on licensed non-canon publications, such as FASA's Star Trek RPG. These insignia originated from the Trekker's Alternity Galactopedia.

↑ 2.02.12.22.32.42.52.6These illustrations are based on rank insignia loosely described and pictured in an officially licensed non-canon publication, FASA's Star Trek RPG. FASA's insignia seen here were rendered in color by the Trekker's Alternity Galactopedia.